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Will boiling water crack the windscreen?

Will boiling water crack the windscreen?

Posted by Holly West-Robinson on 08 December 2014 in Company News

Will boiling water crack the windscreen?” is a common question asked on frosty mornings.

No one likes to rush out the door clutching their car keys to find that the windscreen is frozen, but do not be tempted to reach for a kettle of boiling water!

Not only can the hot water spill onto the floor and freeze, creating a slip hazard but it is possible for your windscreen to crack as the extreme temperatures meet.

We also suggest that you avoid the temptation to jump in the front seat and wait for the windscreen wipers and heated window fan to solve the problem. This method is timely and can cause unnecessary wear on both the window wipers and engine.

Can I just use my CD case to scrape away the ice?

It will not crack the windscreen but try and avoid using any tools such as CD cases, credit cards or keys to remove ice from a windscreen as they can scratch the glass.

The best way to clear your frozen windscreen is to use de-icer and a scraper. Some scrapers even come fitted into a warm mitten to make the experience a little cosier!

Make sure you defrost the entire windscreen. The cold temperatures can make it tempting to simply defrost a small circle above the steering wheel but this makes your driving view dangerously restricted.

About the Author

Holly West-Robinson
Holly West-Robinson

Hi I'm Holly and I'm a young driver based in Peterborough! I love tattoos, food, drawing and anything art related, enjoy hanging out with friends and family and making a fool of myself XD I'm a huge lover of music and also a part time DJ in the underground drum and bass scene. I passed my driving test first time when I was 17 years old have been loving life and my new found freedom ever since! I'm definitely one of the adventurous types who's always up for a good old road trip!


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Marmalade is a trading style of Young Marmalade Limited (registered in England under company number 04627884) and Provisional Marmalade Limited (Registered in England under company number 06779950).
Registered office for both companies is Marmalade House, Alpha Business Centre, Mallard Road, Bretton, Peterborough, PE3 8AF. Young Marmalade Limited is an Appointed Representative of Provisional Marmalade Limited, which is authorised and regulated by the Financial Conduct Authority under Firm Reference Number 542063. You can check this on the Financial Services Register by visiting